QwtSimpleCompassRose - Man Page

A simple rose for QwtCompass.

Synopsis

#include <qwt_compass_rose.h>

Inherits QwtCompassRose.

Public Member Functions

QwtSimpleCompassRose (int numThorns=8, int numThornLevels=-1)
virtual ~QwtSimpleCompassRose ()
Destructor.
void setWidth (double)
double width () const
void setNumThorns (int)
int numThorns () const
void setNumThornLevels (int)
int numThornLevels () const
void setShrinkFactor (double factor)
double shrinkFactor () const
virtual void draw (QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup=QPalette::Active) const

Static Public Member Functions

static void drawRose (QPainter *, const QPalette &, const QPointF &center, double radius, double north, double width, int numThorns, int numThornLevels, double shrinkFactor)

Detailed Description

A simple rose for QwtCompass.

Constructor & Destructor Documentation

QwtSimpleCompassRose::QwtSimpleCompassRose (int numThorns = 8, int numThornLevels = -1)

Constructor

Parameters

numThorns Number of thorns
numThornLevels Number of thorn levels

Member Function Documentation

void QwtSimpleCompassRose::draw (QPainter * painter, const QPointF & center, double radius, double north, QPalette::ColorGroup cg = QPalette::Active) const [virtual]

Draw the rose

Parameters

painter Painter
center Center point
radius Radius of the rose
north Position
cg Color group

Implements QwtCompassRose.

void QwtSimpleCompassRose::drawRose (QPainter * painter, const QPalette & palette, const QPointF & center, double radius, double north, double width, int numThorns, int numThornLevels, double shrinkFactor) [static]

Draw the rose

Parameters

painter Painter
palette Palette
center Center of the rose
radius Radius of the rose
north Position pointing to north
width Width of the rose
numThorns Number of thorns
numThornLevels Number of thorn levels
shrinkFactor Factor to shrink the thorns with each level

int QwtSimpleCompassRose::numThornLevels () const

Returns

Number of thorn levels

See also

setNumThorns(), setNumThornLevels()

int QwtSimpleCompassRose::numThorns () const

Returns

Number of thorns

See also

setNumThorns(), setNumThornLevels()

void QwtSimpleCompassRose::setNumThornLevels (int numThornLevels)

Set the of thorns levels

Parameters

numThornLevels Number of thorns levels

See also

setNumThorns(), numThornLevels()

void QwtSimpleCompassRose::setNumThorns (int numThorns)

Set the number of thorns on one level The number is aligned to a multiple of 4, with a minimum of 4

Parameters

numThorns Number of thorns

See also

numThorns(), setNumThornLevels()

void QwtSimpleCompassRose::setShrinkFactor (double factor)

Set the Factor how to shrink the thorns with each level The default value is 0.9.

Parameters

factor Shrink factor

See also

shrinkFactor()

void QwtSimpleCompassRose::setWidth (double width)

Set the width of the rose heads. Lower value make thinner heads. The range is limited from 0.03 to 0.4.

Parameters

width Width

double QwtSimpleCompassRose::shrinkFactor () const

Returns

Factor how to shrink the thorns with each level

See also

setShrinkFactor()

double QwtSimpleCompassRose::width () const

Returns

Width of the rose

See also

setWidth()

Author

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Info

Mon Jun 1 2020 Version 6.1.5 Qwt User's Guide